Long-service-life piston ring sealing system

Abstract

The invention belongs to the field of compressors, and particularly discloses a long-service-life piston ring sealing system. The system involves piston rings arranged on a piston and further comprises supporting rings, the supporting rings are coaxially fixed on the piston rings, and the outer diameters of the supporting rings are smaller than that of the piston rings; cuts are formed in the piston rings and the supporting rings, and the cuts in the piston rings and the cuts in the supporting rings are staggered; circumferential grooves are formed in the side walls of the piston rings, balance holes are formed in the sides, facing high pressure, of the piston rings, and the balance holes communicate with the circumferential grooves; and magnetic blocks are fixedly arranged in the circumferential grooves, and the heat conductivity coefficient of the supporting rings is larger than that of the piston rings. Compared with traditional piston rings, the scheme has the beneficial effects that by means of the unique structure, the strength of the piston rings is guaranteed, and meanwhile, the improvement is carried out in several aspects of reducing the friction force, reducing chippingsand avoiding the local high temperature, so that the abrasion of the piston rings is effectively relieved, and the service life of the piston rings is greatly prolonged.

Description

technical field [0001] The invention belongs to the field of compressors, and specifically discloses a long-life piston ring sealing system. Background technique [0002] During the working process of the reciprocating compressor, it is necessary to ensure that the working chamber of the cylinder is sealed to change the volume and increase the gas pressure. The piston ring is a dynamic sealing structure that closes the gap between the piston and the cylinder. [0003] During operation, the pressure of the piston ring in front of the ring (high pressure side) and the pressure after the ring (low pressure side) Under the action of the pressure difference, is pushed to the lower pressure On one side, the leakage of gas along the end face of the ring groove is sealed. The pressure acting on the inner circle of the piston ring is about the pressure before the ring , this pressure is greater than the average pressure acting on the outer circle of the piston ring, so a pre...

AI Technical Summary

Problems solved by technology

Friction will cause the wear of the cylinder mirror surface and piston ring, friction heat will also increase the working temperature, and the temperature increase will significantly reduce the wear resistance of the piston ring, thereby accelerating the wear of the piston ring

[0005] The existing piston ring sealing system usually uses higher quality materials and better lubricating oil, but there is obviously a bottleneck in the adjustment of materials alone, and it cannot meet the production cost requirements of small and medium-sized enterprises

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